Door-bell



(No Model.)

O. L. LIVINGSTON.

DOOR BELL. v No. 349,437. Patented Sept. 21, 1886.

nhlll lll raphcn Washingioll D c U ITED STATES PATENT OFFICE.

CHARLES L. LIVINGSTON, OF AURORA, ILLINOIS.

DOOR-BELL.

SPECIFICATION forming part of Letters Patent No. 349,437, datedSeptember 21,1886. Application filed June 21, 1886. Serial No. 205,828.(No model.)

' tion.

My invention relates to that class of doorbells in which the spindle isturned upon its axis in order to ring the bell, instead of being pulledoutward from the door; and it consists, mainly, in combining with such aspindle and with a bell an escapement mechanism, as hereinafter setforth, and whereby the hammer may strike one or any desired number ofblows to each movement or turn of the spindle, and in other particularspresently to be stated.

In the drawings, Figure 1 is a side view showing my improvements asapplied to a door. Fig. 2 is a front view, the gong being removed; Fig.3, a vertical central section; Fig. 4, an arrangement in which theescapement-wheel is the only one employed.

A is the rotating spindle, passing through the wood-work B of a door ordoor-frame, and G a milled disk secured on the spindle, and serving torotate it; but it is evident that a crank, wheel, or any other handlewhich will'serve to turn the spindle on its axis may be used instead ofthe disk. The spindle is prevented being pulled out by any appropriatestop, or by a pin, (I, inserted therein at the inside of the door. Thehell or gong E, screwed to the inner end of the spindle, also serves toprevent the spindle being pulled away from the door.

On the inside of the door or frame is fastened a bottom plate or base,F, for supporting the mechanism, and on which plate are mounted severalposts or standards, 9, on which is secured a top plate, H, and in theseplates the spindle A, as also the spindles of the escapement-wheel I,and of the pallet K,

have their bearings. To the spindle of the escapement is connected thearm L of the hammer M.

On the spindle A is rigidly secured a small circular rack, N, and alarge toothed gear, 0, is placed on the same spindle, but notpermanently fastened to it, and so that when the spring-pawl p on thegear 0 is in engagement with the teeth of the rack, as shown, and thespindle is turned to the right, the rack must rotate the large gear 0,which then causes the small lantern-wheelQ on the spindle of theescapement-wheel to revolve rapidly, and thus to operate equally rapidlythe pallet and the hammer; but when the spindle A is turned to theleft,the escapement clutch or pallet prevents the escapement-wheel fromrevolving, and the gear 0 is locked and the rack slips pastits pawlwithout obstruction. It will now be evident that depending upon thenumber of teeth in the escapement-wheel, or on the number of pins in thelanternwheel, or on the number of teeth in the gear 0, or on allcombined, (and which teeth may be as few or many as desired,) therapidity of the hammer-strokes will be determined; and it will be alsoevident that the gears may be more than shown, if in some cases it bedesired to still further multiply the number ofstrokes; or, if desiredmaterially to lessen the number, then the large gear 0 may be omitted,and the escapement-wheel may be placed on the spindle in its stead, thepallet being of course so located as to engage with it. (See Fig. 4.)

1t will be evident that any ordinary pinion or gear may be substitutedfor the lantern wheel Q. to fit any thickness of door or frame,substantially the same as in a door-knob. The bell itself may be appliedto rotate with the spindle, or not, as desired.

The entire deviceis simple, easily attached, reliable, and durable.

I claim- 1. The combination and relative arrangement, as shown anddescribed, of a door hell or gong, a rotating spindle provided with adisk or its described equivalent, serving to turn it on its axis and toactuate the hammer, and

The spindle may of course be made A, having a rotary but no endwisemovement, the gear 0, loosely supported on said spindle, rack N, fast onsaid spindle, spring-pawl p on the gear 0 and engaging with rackN,lantern- Wheel Q, escapement-wheel I, pallet K, arm L 15 and itshammer, and the gong or bell.

7 CHARLES L. LIVINGSTON. WVitnesses:

E. T. PRINDLE, J. P. OAss.

